JPS61274193A - Pipe joint - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to equipment or a mechanical pipe joint that has a connecting means for connecting a pipe side flange and connects to one machine side flange.

[Conventional technology]

Equipment casings are often cast with integral standard flanges. In that case, this flange is 5% of the total weight of the accessories.
It may occupy up to 0.

Fittings having a plain socket tube that is cast and only protrudes requires expensive pipe connection fittings.

[Problems to be Solved by the Invention] The object of the invention is to develop a pipe [coupling] for equipment or machinery that is easy to assemble and can withstand high loads.

[Means for solving the problem, action, and effects of the invention]
According to the invention, a) a free socket tube is provided on the machine side, b) a tube side flange, a clamping element and a clamping wheel element are fitted onto the tube ends to be butt connected, and these C) a seal surrounds the joint between the socket tube and the tube end;
both axial ends of the seal protrude into one seal chamber, d) the tube side flange and the clamp wheel member form a clamp chamber between them, and the clamp member is inserted into the chamber; e) The radially inner clamping of the clamping member has its rim resting on the tube end, the radially outer clamping has its rim resting on the rim, the clamping chamber of the clamping chamber has an overlapping surface, and axial compression acts on the clamping member. The above object is achieved by arranging the clamping member to project axially from the clamping chamber such that the force causes an enlargement of the outer diameter and a reduction of the inner diameter of the clamping member.

The machine-side flange mentioned above may be a part of the housing or the like.

The pipe fitting of the invention is assembled onto a smooth pipe end which has only been deburred, the only assembly tool being a suitable spanner for screwing. i.e. flange welding,
There is no soldering or screwing. This fitting is not only easy to assemble, but also easy to disassemble, and with the exception of the seal, all other parts can be used multiple times. All protective measures specified in explosion-proof environments can be dispensed with, since the parts only need to be fitted and tightened together by threaded joints during assembly. This fitting is relatively compact in construction, resulting in weight savings of over 40 inches over conventional flange fittings.

In one embodiment, the pipe-side clamping wheel member is supported on a machine-side flange, the flange being fixedly mounted and having a sealing chamber for receiving a corresponding axial end of the seal, the cooling chamber simultaneously being Form a socket tube. The sealing chamber is thus integrated into the flange or housing part on the machine side. In that case, the sealing chamber is preferably formed into a conical shape.

It is advantageous if the annular contact surface between the clamping wheel part and the machine side flange is designed with a concave height. The pipe ends to be connected can thereby form an angle with respect to the machine side flange.

It is also possible to dispense with a fixed flange integrated into the equipment or machine. In this case, the clamp wheel member and the clamp member are also fitted onto the machine side socket pipe based on the present invention. If the two clamping wheel parts are brought into direct axial abutment by means of both flanges or via the clamping part, a sealing force exerted on the seal is created by the threaded joint which tightens the two flanges together. Also, 2
It is also possible for the individual clamping wheel parts to be tightened together by means of their own threaded joints. What is important is to separate the two functions of "sealing" and "tightening".

Seal Id. By forming the sealing chamber conically, axial and radial compressive forces are exerted on the seal when the two clamping wheel members are pressed together.

When two clamp wheel members are mutually supported, it is preferable that the clamp wheel members reliably engage each other in the radial direction. However, it is also possible to mutually support two clamping wheel parts via an intermediate ring. Each concave end surface of the intermediate ring rests on a corresponding convex contact surface of the clamping wheel part. This allows an angular displacement between the machine-side socket tube and the tube end to be connected. Also, since the intermediate ring can be made of a non-conductive material, is it insulating? Non-conducting pipe fittings can be manufactured using this method.

Furthermore, it is preferred that the clamping member comprises at least one slightly tapered disc, and the wall of the clamping chamber member substantially parallel to the joint matches the taper of said disc. . With the same dimensions, this makes it possible to transmit greater tension forces acting on the socket tubes connected to one another, or to design the flanges thinner for the same load. This is particularly important for aluminum fittings and pipe fittings in the plastic sector. A tapered structure or angular adjustment of the flange member is also advantageous if the socket tubes connected to each other are not precisely aligned.

The angle formed between the axes of both tubes is such that one half of the clamping member makes an exact 90° angle with the corresponding tube axis in the loaded position, but the other half of the clamping member makes an angle of less than 90° with the corresponding tube axis. .

For convenience of centering, it is suitable for the end side of the clamp wheel member to engage in a corresponding recess in the flange. This recess is chamfered for ease of assembly and is only a few millimeters wide.

In this embodiment, it is preferred that the walls of the recess, which are substantially parallel to the joint, align with the cheeks and elbows of the aforementioned disk.

The annular portion of the disc-shaped flange member has a cross-section with an arcuate profile that slopes at an acute angle towards the end of the clamping member.

It may also be formed as a tube-side flange and a socket. The female thread of the socket is screwed into the male thread of the machine side flange. In this case, therefore, the said connecting means between the two flanges consists of a threaded joint 20.21.

The coupling means for connecting the tube side flange to the machine side flange can also consist of a shell that engages and tightens the rear surfaces of both flanges. In that case, the shell has an axial shoulder or bulge. It is also possible that the tube-side flange has a taper 5 overhang on the opposite side of the flange chamber, and the shoulder of the shell formed by the corresponding taper rests on this overhang.

In another embodiment, the connecting means for connecting the tube-side flange to the machine-side flange consists of a sleeve, the internal thread of which is screwed into the external thread of the two flanges. In that case, in the case of thread threads, one of the two internal threads of the flange turns counterclockwise and the other turns clockwise.

〔Example〕

The present invention will be described based on examples with reference to the drawings.

To manufacture the pipe joint shown in FIG. 1, a flange 3, a flange 4, and a flange wheel member 5 (hereinafter referred to as "chamber member 5") are fitted onto the pipe end 2 that is butted against the socket pipe 1. . The chamber member 5 has an annular flange chamber 2 open to the flange 3 side, and a clamp member 4 made of a conical or convex disc is inserted into the clamp chamber 7. The radially inner tightening of this clamp member 4 is performed by the edge 4.
a is supported on the tube end 2 and the radially outer clamping is on the edge 4
The annular clamping surface 7a of the flange chamber 7 is placed over b (
(See Figure 3).

The clamping member 4 projects beyond the end face of the flange chamber 5 in a relaxed state. In that case, the structure of the flange member 4 is selected such that the force that presses the flange member 4 in the axial direction against the back surface of the flange chamber 7 causes the outer diameter of the flange member 4 to increase and the inner diameter to decrease.

Each of the chamber members 5 has a seal chamber 9 open to the joint portion 8 (see FIGS. 3 and 5).

The seal chamber 9 is formed into a conical shape. That is, it narrows in the direction of the adjacent flange 3.

The joint 8 is surrounded by a seal 6 formed as an elastomeric molded seal. An inner ring 10 is embedded within the seal 6. The outer circumference of the seal 6 roughly corresponds to the circumference of the two seal chambers 9, 9', but since it is larger, when the two chamber members 5, 5' are pressed toward each other, the axial direction and a radial compressive force is applied to the seal.

Tightening is performed, for example, by four bolts 11 distributed evenly around the flange. The gel rod 1 is inserted through the flange 3 (Fig. 2).

Alternatively, it can be screwed into the machine side flange 3' (Fig. 3) as a fixing bolt.

In the embodiment according to FIG. 1, the chamber part 5 on the tube side is supported on the machine side flange 3'. The machine side flange 3' can also be constructed as part of the housing and is fixed and has a sealing chamber 9' for receiving the opposite end of the seal 60. This sealing chamber 9' then simultaneously forms the socket tube 1.

The annular contact surface 13 between the chamber member 5 and the machine side flange 3' is formed with a medium height.

In the embodiment according to FIG. 2, there is also a flange 3', a clamp part 4' and a clamp wheel member 5 on the machine side socket pipe 1.
' (hereinafter referred to as "chamber member 5'") is loosely fitted. The two chamber parts 5, 5' are mutually supported via an intermediate ring 17. The concave end surfaces 17a on both sides of the intermediate ring 17 abut against the corresponding convex contact surfaces of the chamber members 5, 5'.

In the embodiment shown in FIGS. 3-5.

The two chamber members 5, 5' are mutually supported and engage securely against radial movement. In order to achieve this radially immovable attachment, the embodiment of FIG.
In the embodiments of FIGS. 4 and 5, the pin 15 which engages in the recess 16 also constitutes the pin 15.

According to FIG. 3, the clamping member 4 consists of at least one disk of slightly conical or convex design. Joint part 8
The wall 7b or 7b' of the rung chamber 7 or 7' forms an angle α<90° with the axis 18 of the tube so as to match the taper of the disc mentioned above.

In the embodiment of FIG. 6, the flanges 3 and 3' are provided with recesses 19 into which the end faces of the corresponding chamber members 5 and 5' engage. The recess 19 is chamfered in order to accommodate the insertion and centering of the chamber member. The wall 19a of this recess 19, which runs substantially parallel to the joint 8, is aligned with the tee 74 of the clamping members 4 and 4' and thus forms an angle of 90° with the axis 18 of the tube.

Figures 7 to 9 show embodiments of connecting means for connecting the tube side flange to the machine side flange.

In the embodiment shown in FIG. 7, the tube-side flange 3 is formed as a socket, the internal thread 20 of which is screwed into the external thread 21 of the machine-side flange 3'.

In the embodiment of FIG.
Consists of 2. The shell 22 engages on the back surfaces of both flanges 3, 3' and tightens them.

In that case, the tube-side flange 3 has a conical extension 3& on the side opposite to the chamber member 5, on which the shoulder 22h of the corresponding tapered shell 22 abuts. The shell 22 has an axial shoulder or bulge.

In the embodiment of FIG. 9, a sleeve 23 is used.

The female threads 24 of the sleeve 23 each have two flanges.
23' and 3 are screwed into the male screws 21 and 25.

[Brief explanation of the drawing]

Fig. 1 is a side view with the upper half cut away of an embodiment of the pipe joint of the present invention applied to a fixed machine side flange, and Fig. 2 is a side view with the upper half cut away to connect the pipe end to a smooth machine side socket pipe. FIG. 3 is an enlarged axial cross-sectional view of an embodiment of two mutually supported clamp wheel members, and FIG. 5 is a sectional view taken along the line ■-V in FIG. 4; FIG. 6 is an axial sectional view of one embodiment of the flange; FIGS. 7 to 9 are FIG. 3 is an axial cross-sectional view of an embodiment of a pipe joint, respectively. 1... Socket pipe, 2... Tube end, 3, 3'...
・Flange, 3a... Conical overhang, 4, 4'...
・Clamp member, 4m, 4b...Tighten at the edge, 5, 5'
... Clamp car member (chamber member), 6... Seal v
, y/...clamp chamber, 7 &... annular tightening is at the edge,
7b, 7b'...Wall surface, 8...Joint part, 9,
9'... Seal chamber, lO... Inner ring, 11...
・? Root, 13... Annular contact surface. 15... Pin, J 6-... Recessed portion, 17... Intermediate ring, 17a... End face, 18... Axis line, 19...
Recessed part, 19m...Wall surface, 2Q...Female thread, 21...
・Male thread, 22... Shell, 22 &... Shoulder, 23
...Sleeve, 24...Female □, 25...Male thread, α...Square. Applicant's representative Patent attorney Takehiko Suzue Contents, 2 changes (L) Fig, 1 Fig, 5 Fig, 8 Procedural amendment (formality) 1. Display of the case Japanese Patent Application No. 61-050286 2, Name of the invention Pipe joint 3, Person making the amendment - Relationship to the case Patent applicant name Agintech AG 4, Agent address 1-26-5 Toranomon, Minato-ku, Tokyo No. 17 Mori Building 105 Telephone: 03 (502) 3181 (Main representative) 6. Appropriate application for amendment (name of representative), power of attorney and its translation,
drawing

Claims (1)

[Scope of Claims] 1) A pipe joint having connecting means (11; 20; 21; 22; 23) for connecting the pipe side flange (3) and connecting with the machine side flange (3'), comprising: a) A socket pipe (1) is provided on the machine side, and b) a pipe side flange (3) is attached to the butt-connected pipe end (2).
and an annular clamp member (4) and a seal chamber (9, 9') inside.
) are fitted in this order, and these are connected to the connecting means (11; 20; 21:2).
c) causing the seal (6) to surround the joint (8) between the socket tube (1) and the tube end (2) and in the axial direction of said seal (6); d) forming a clamp chamber (7) between the tube side flange (3) and the clamp chamber member (5); e) radially inner clamping edge (4, 4') of said clamping member (4, 4');
4a) is supported on said tube end (2), and a clamping surface (4a) of said clamping chamber (7) is mounted on the radially outer clamping edge (4b).
7a) and such that the axial compressive force acting on the clamping member (4) causes an enlargement of the outer diameter and a reduction of the inner diameter of the clamping member (4).
A pipe joint characterized in that it is configured to project from the clamp chamber (7) in the axial direction. 2) The pipe-side clamp chamber member (5) is supported on the fixed machine-side flange (3'), and the socket pipe (1) has a seal therein that receives the axial end of the seal (6). A pipe joint according to claim 1, characterized in that it has a chamber (9'). 3) The pipe according to claim 2, wherein the annular contact surface (13) between the clamp chamber member (5) and the machine side flange (3') is formed to have a medium height. Fittings. 4) the flange (3') on the socket pipe (1);
The clamp member (4') and the clamp chamber member (
5') is loosely fitted, the pipe connection joint according to claim 1. 5) A pipe joint according to claim 4, characterized in that the two clamp chamber members (5, 5') are mutually supported and securely engage each other in the radial direction. 6) The two clamp chamber members (5, 5') are mutually supported via an intermediate ring (17), and the intermediate ring (17)
Claim 4, characterized in that the end surfaces (17a) formed in a convex shape on both sides of the clamp chamber member (5, 5') abut against the corresponding medium-high convex contact surface of the clamp chamber member (5, 5'). Pipe fittings listed. 7) The clamping member (4, 4') consists of a disc formed with at least one small taper, the wall (7, 7') of the clamping chamber (7, 7') being substantially parallel to the joint (8). 7b, 7b
7. The pipe joint according to any one of claims 1 to 6, characterized in that the angle (') is configured to match the taper of the disc. 8) The end surface side of the clamping member (5, 5') engages with a recess (19) formed in the flange (3), according to any of claims 1 to 7. The pipe joint according to any one of the items. 9) said recess (19) substantially parallel to said joint (8);
9. Pipe coupling according to claim 8, characterized in that the wall surface (19a) of the disk matches the taper of said disc. 10) Claims characterized in that said seal (6) is an elastomeric molded seal, in which a hard or plastic inner ring (10) is embedded and directly rests on said joint (8). The pipe joint according to any one of Items 1 to 9. 11) Claims 1 to 1, characterized in that the seal chamber (9, 9') is formed in a conical shape.
The pipe fitting according to any one of item 0. 12) A patent characterized in that the tube side flange (3) is formed as a socket, and the female thread (20) of the socket is screwed into the male thread (21) of the machine side flange (3'). A pipe joint according to any one of claims 1, 2, or 7 to 11. 13) characterized in that the connecting means consists of a shell (22), which engages on the back side of the two flanges (3, 3') and connects the flanges (3, 3'); A pipe joint according to any one of claims 1, 2, or 7 to 11. 14) The pipe side flange (3) is the clamp chamber (5)
a shoulder (22a) of said shell (22) formed with a corresponding taper, with a tapered overhang (3a) on the opposite side;
14. The pipe joint according to claim 13, wherein the taper projection portion (31) abuts on the tapered projection (31). 15) The connecting means consists of a sleeve (23), and the internal threads (24) of the sleeve are screwed into the external threads (21, 25) of the two flanges (3, 3'), respectively. A pipe joint according to any one of claims 1, 2, or 7 to 11.